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Your cart is empty.Transform your electrical projects with this versatile 3-pack of NE555 timer relay modules. Each red module operates on DC 12V power and features adjustable delay settings from 0 to 10 seconds, perfect for automotive control systems and various electrical equipment applications. The constant current design ensures reliable performance and precise timing control. These relay switch modules are ideal for creating time-delayed circuits, sequential timing systems, or automated control sequences. The adjustable nature of these modules makes them highly adaptable for different timing requirements, while their compact size allows for easy integration into existing setups. Whether you're working on automotive projects, industrial controls, or DIY electronics, these timer relay modules provide the flexibility and functionality needed for precise timing applications.
Soulline
Reviewed in the United States on May 14, 2025
no es muy confiable
Collin T
Reviewed in the United States on December 20, 2024
I was skeptical about the other review talking about this working once. I figured they didn't understand how the timer circuit works, but they are correct. This circuit will operate a single time out of the box and then never again.I am unsure if all the other circuits by different sellers have the same issue, but this one appears to have its capacitor and resistor backwards by design.If you are curious about how the 555 timer works, I encourage you to go look up the different circuits you can build using one. You will notice that every application has a resistor attached to VCC and then a capacitor tied to ground. THIS hardware had the capacitor tied to VCC and the resistor tied to ground. The result is that the voltage on the trigger and threshold of the 555 timer would slowly decay and the relay would trigger. The problem is, there is no way to charge the trigger and threshold back up to VCC in order to repeat the process.I desoldered the cap and resistor and switched their positions and was able to make the circuit behave as I expected. When power is applied, the voltage at the trigger would slowly rise until the relay would trigger. After power is removed, the voltage drops back down so the process can be repeated.DO NOT BUY THIS unless you want a little project and desoldering isn't a deal breaker.NOTE: Always test your hardware before going into production. These boards should have been thrown in the trash.
Edward Farmer
Reviewed in the United States on November 21, 2024
Only a one shot use timmer. Once it is power and switches the relay it stays on from that point forward. Will not rest for a second or third times delay. Buyer beware.
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